Fix ISDONE.DLL/UNARC.DLL missing error code -1/-7/-11/-12/-14 — how to solve isdone.dll error while installing games? How to fix Isdone.dll/Unarc.dll returned an error code? How to remove ISDone.dll & unarc.dll file error in PC game? Getting rid of isdone.dll error unarc.dll error-7? Fixing unarc.dll error code: -12 check sum error? Solved the unarc.dll returned an error code 14? Remove archive header is corrupted unarc.dll error code 14? Some might faced isdone.dll/unarc.dll decompression error gta 4 installing game like Mafia, Call Of Duty 2019. The file used to provide information to the CPU & GPU while playing that game. So the “ISDone.dll is missing” error message frequently arises during the installation of computer games gets failed. The "ISDone.dll" & "Unarc.dll" are the files that, like all the other "DLL" files, situated at the System32 folder on 32-bit computer systems whereas in the SysWOW64 folder for 64 bit PC. Here I not only tell you to download isdone.dll or unarc.dll files but also you will get to fix DLL missing errors on your computer system. Check out 8 methods to resolve "IsDone.dll" "Unarc.dll" downloading or missing errors when installing games.